3M MonitorMark Time Temperature Indicator

The indicator is irreversible, providing a permanent record of temperature exposure even after temperatures return to acceptable levels.

3M™ MonitorMark™ Time Temperature Indicators add an important temperature exposure measure that extends beyond your plant to your customer's delivery dock. MonitorMark time temperature indicators not only signal when a critical temperature has been exceeded, but provide an easy-to-read visual signal to estimate the maximum amount of time a product has spent above the threshold temperature. Placed directly on secondary shipper boxes of temperature-sensitive products during shipment and storage, the indicators provide information to assist in estimating time and temperature exposure.